CLADOENDESIS OF EPHEMEROPTERA

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Plesiomorphon Amercaenis

(Panephemeroptera Euephemeroptera Euplectoptera Anteritorna Bidentiseta Furcatergaliae  
Fimbriatotergaliae Caenotergaliae Caenoptera Caenis/f3=g1
MadecocercusCaenis/f4=g2TillyardocercusCaenis/f5=g3  
Clypeocaenis/fg1 - pm.Amercaenis)

Nomen hierarchicum: Amercaenis/g(1) [g:1985]

In circumscription fits:

gen. Amercaenis Provonsha & McCafferty 1985: 2

plesiomorphon Amercaenis/g(1): Kluge 2004: 289


References. Provonsha & McCafferty 1985: ; Kluge 2004:


Plesiomorphies of Amercaenis. Maxillary palp is 3-segmented (unlike Clypeocaenis/g2). Filtering setae on fore tibia and tarsus [see Clypeocaenis/g1 (1)] are situated only on inner side (unlike Clypeocaenis/g2), not forming rows (unlike Clypeocaenis/g3).

Size. Fore wing length 24 mm. 

Distribution. Nearctic.


Nominal species in Amercaenis/g(1):  

cusabo Provonsha & McCafferty 2006 [Amercaenis]

ridens McDunnough 1931 [Caenis] typus nominis Amercaenis ,


See also: 

Caenis/f4=g2 INCERTAE SEDIS

Caenoptera INCERTAE SEDIS

Furcatergaliae INCERTAE SEDIS